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libata-link: implement and use link/device iterators
Multiple links and different number of devices per link should be considered to iterate over links and devices. This patch implements and uses link and device iterators - ata_port_for_each_link() and ata_link_for_each_dev() - and ata_link_max_devices(). This change makes a lot of functions iterate over only possible devices instead of from dev 0 to dev ATA_MAX_DEVICES. All such changes have been examined and nothing should be broken. While at it, add a separating comment before device helpers to distinguish them better from link helpers and others. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
Jeff Garzik
parent
9af5c9c97d
commit
f58229f806
@ -46,21 +46,20 @@
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static int generic_set_mode(struct ata_port *ap, struct ata_device **unused)
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{
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int dma_enabled = 0;
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int i;
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struct ata_device *dev;
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/* Bits 5 and 6 indicate if DMA is active on master/slave */
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if (ap->ioaddr.bmdma_addr)
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dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
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for (i = 0; i < ATA_MAX_DEVICES; i++) {
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struct ata_device *dev = &ap->link.device[i];
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ata_link_for_each_dev(dev, &ap->link) {
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if (ata_dev_enabled(dev)) {
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/* We don't really care */
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dev->pio_mode = XFER_PIO_0;
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dev->dma_mode = XFER_MW_DMA_0;
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/* We do need the right mode information for DMA or PIO
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and this comes from the current configuration flags */
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if (dma_enabled & (1 << (5 + i))) {
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if (dma_enabled & (1 << (5 + dev->devno))) {
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ata_id_to_dma_mode(dev, XFER_MW_DMA_0);
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dev->flags &= ~ATA_DFLAG_PIO;
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} else {
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@ -509,7 +509,7 @@ int ata_acpi_on_suspend(struct ata_port *ap)
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*/
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void ata_acpi_on_resume(struct ata_port *ap)
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{
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int i;
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struct ata_device *dev;
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if (ap->acpi_handle && (ap->pflags & ATA_PFLAG_GTM_VALID)) {
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BUG_ON(ap->flags & ATA_FLAG_ACPI_SATA);
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@ -519,8 +519,8 @@ void ata_acpi_on_resume(struct ata_port *ap)
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}
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/* schedule _GTF */
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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ap->link.device[i].flags |= ATA_DFLAG_ACPI_PENDING;
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ata_link_for_each_dev(dev, &ap->link)
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dev->flags |= ATA_DFLAG_ACPI_PENDING;
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}
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/**
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@ -2105,21 +2105,19 @@ int ata_bus_probe(struct ata_port *ap)
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{
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unsigned int classes[ATA_MAX_DEVICES];
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int tries[ATA_MAX_DEVICES];
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int i, rc;
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int rc;
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struct ata_device *dev;
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ata_port_probe(ap);
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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tries[i] = ATA_PROBE_MAX_TRIES;
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ata_link_for_each_dev(dev, &ap->link)
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tries[dev->devno] = ATA_PROBE_MAX_TRIES;
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retry:
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/* reset and determine device classes */
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ap->ops->phy_reset(ap);
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for (i = 0; i < ATA_MAX_DEVICES; i++) {
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dev = &ap->link.device[i];
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ata_link_for_each_dev(dev, &ap->link) {
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if (!(ap->flags & ATA_FLAG_DISABLED) &&
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dev->class != ATA_DEV_UNKNOWN)
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classes[dev->devno] = dev->class;
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@ -2134,18 +2132,16 @@ int ata_bus_probe(struct ata_port *ap)
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/* after the reset the device state is PIO 0 and the controller
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state is undefined. Record the mode */
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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ap->link.device[i].pio_mode = XFER_PIO_0;
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ata_link_for_each_dev(dev, &ap->link)
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dev->pio_mode = XFER_PIO_0;
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/* read IDENTIFY page and configure devices. We have to do the identify
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specific sequence bass-ackwards so that PDIAG- is released by
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the slave device */
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for (i = ATA_MAX_DEVICES - 1; i >= 0; i--) {
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dev = &ap->link.device[i];
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if (tries[i])
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dev->class = classes[i];
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ata_link_for_each_dev(dev, &ap->link) {
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if (tries[dev->devno])
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dev->class = classes[dev->devno];
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if (!ata_dev_enabled(dev))
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continue;
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@ -2163,8 +2159,7 @@ int ata_bus_probe(struct ata_port *ap)
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/* After the identify sequence we can now set up the devices. We do
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this in the normal order so that the user doesn't get confused */
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for(i = 0; i < ATA_MAX_DEVICES; i++) {
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dev = &ap->link.device[i];
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ata_link_for_each_dev(dev, &ap->link) {
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if (!ata_dev_enabled(dev))
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continue;
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@ -2180,8 +2175,8 @@ int ata_bus_probe(struct ata_port *ap)
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if (rc)
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goto fail;
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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if (ata_dev_enabled(&ap->link.device[i]))
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ata_link_for_each_dev(dev, &ap->link)
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if (ata_dev_enabled(dev))
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return 0;
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/* no device present, disable port */
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@ -2803,16 +2798,14 @@ static int ata_dev_set_mode(struct ata_device *dev)
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int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
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{
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struct ata_link *link = &ap->link;
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struct ata_device *dev;
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int i, rc = 0, used_dma = 0, found = 0;
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int rc = 0, used_dma = 0, found = 0;
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/* step 1: calculate xfer_mask */
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for (i = 0; i < ATA_MAX_DEVICES; i++) {
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ata_link_for_each_dev(dev, link) {
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unsigned int pio_mask, dma_mask;
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dev = &ap->link.device[i];
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if (!ata_dev_enabled(dev))
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continue;
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@ -2831,8 +2824,7 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
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goto out;
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/* step 2: always set host PIO timings */
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for (i = 0; i < ATA_MAX_DEVICES; i++) {
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dev = &ap->link.device[i];
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ata_link_for_each_dev(dev, link) {
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if (!ata_dev_enabled(dev))
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continue;
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@ -2849,9 +2841,7 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
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}
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/* step 3: set host DMA timings */
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for (i = 0; i < ATA_MAX_DEVICES; i++) {
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dev = &ap->link.device[i];
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ata_link_for_each_dev(dev, link) {
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if (!ata_dev_enabled(dev) || !dev->dma_mode)
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continue;
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@ -2862,9 +2852,7 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
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}
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/* step 4: update devices' xfer mode */
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for (i = 0; i < ATA_MAX_DEVICES; i++) {
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dev = &ap->link.device[i];
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ata_link_for_each_dev(dev, link) {
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/* don't update suspended devices' xfer mode */
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if (!ata_dev_enabled(dev))
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continue;
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@ -6113,6 +6101,7 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
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ap->link.ap = ap;
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/* can't use iterator, ap isn't initialized yet */
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for (i = 0; i < ATA_MAX_DEVICES; i++) {
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struct ata_device *dev = &ap->link.device[i];
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dev->link = &ap->link;
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@ -6453,7 +6442,8 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
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/* kick EH for boot probing */
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spin_lock_irqsave(ap->lock, flags);
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ehi->probe_mask = (1 << ATA_MAX_DEVICES) - 1;
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ehi->probe_mask =
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(1 << ata_link_max_devices(&ap->link)) - 1;
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ehi->action |= ATA_EH_SOFTRESET;
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ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
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@ -6551,7 +6541,7 @@ int ata_host_activate(struct ata_host *host, int irq,
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void ata_port_detach(struct ata_port *ap)
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{
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unsigned long flags;
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int i;
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struct ata_device *dev;
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if (!ap->ops->error_handler)
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goto skip_eh;
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@ -6568,8 +6558,8 @@ void ata_port_detach(struct ata_port *ap)
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*/
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spin_lock_irqsave(ap->lock, flags);
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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ata_dev_disable(&ap->link.device[i]);
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ata_link_for_each_dev(dev, &ap->link)
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ata_dev_disable(dev);
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spin_unlock_irqrestore(ap->lock, flags);
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@ -200,23 +200,24 @@ static unsigned int ata_eh_dev_action(struct ata_device *dev)
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return ehc->i.action | ehc->i.dev_action[dev->devno];
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}
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static void ata_eh_clear_action(struct ata_device *dev,
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static void ata_eh_clear_action(struct ata_link *link, struct ata_device *dev,
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struct ata_eh_info *ehi, unsigned int action)
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{
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int i;
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struct ata_device *tdev;
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if (!dev) {
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ehi->action &= ~action;
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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ehi->dev_action[i] &= ~action;
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ata_link_for_each_dev(tdev, link)
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ehi->dev_action[tdev->devno] &= ~action;
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} else {
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/* doesn't make sense for port-wide EH actions */
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WARN_ON(!(action & ATA_EH_PERDEV_MASK));
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/* break ehi->action into ehi->dev_action */
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if (ehi->action & action) {
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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ehi->dev_action[i] |= ehi->action & action;
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ata_link_for_each_dev(tdev, link)
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ehi->dev_action[tdev->devno] |=
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ehi->action & action;
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ehi->action &= ~action;
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}
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@ -922,7 +923,8 @@ void ata_eh_qc_retry(struct ata_queued_cmd *qc)
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*/
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static void ata_eh_detach_dev(struct ata_device *dev)
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{
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struct ata_port *ap = dev->link->ap;
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struct ata_link *link = dev->link;
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struct ata_port *ap = link->ap;
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unsigned long flags;
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ata_dev_disable(dev);
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@ -937,8 +939,8 @@ static void ata_eh_detach_dev(struct ata_device *dev)
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}
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/* clear per-dev EH actions */
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ata_eh_clear_action(dev, &dev->link->eh_info, ATA_EH_PERDEV_MASK);
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ata_eh_clear_action(dev, &dev->link->eh_context.i, ATA_EH_PERDEV_MASK);
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ata_eh_clear_action(link, dev, &link->eh_info, ATA_EH_PERDEV_MASK);
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ata_eh_clear_action(link, dev, &link->eh_context.i, ATA_EH_PERDEV_MASK);
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spin_unlock_irqrestore(ap->lock, flags);
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}
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@ -978,7 +980,7 @@ static void ata_eh_about_to_do(struct ata_port *ap, struct ata_device *dev,
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ehi->flags &= ~ATA_EHI_RESET_MODIFIER_MASK;
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}
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ata_eh_clear_action(dev, ehi, action);
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ata_eh_clear_action(&ap->link, dev, ehi, action);
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if (!(ehc->i.flags & ATA_EHI_QUIET))
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ap->pflags |= ATA_PFLAG_RECOVERED;
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@ -1009,7 +1011,7 @@ static void ata_eh_done(struct ata_port *ap, struct ata_device *dev,
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ehc->i.flags &= ~ATA_EHI_RESET_MODIFIER_MASK;
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}
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ata_eh_clear_action(dev, &ehc->i, action);
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ata_eh_clear_action(&ap->link, dev, &ehc->i, action);
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}
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/**
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@ -1736,10 +1738,11 @@ static void ata_eh_report(struct ata_port *ap)
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static int ata_do_reset(struct ata_port *ap, ata_reset_fn_t reset,
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unsigned int *classes, unsigned long deadline)
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{
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int i, rc;
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struct ata_device *dev;
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int rc;
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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classes[i] = ATA_DEV_UNKNOWN;
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ata_link_for_each_dev(dev, &ap->link)
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classes[dev->devno] = ATA_DEV_UNKNOWN;
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rc = reset(ap, classes, deadline);
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if (rc)
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@ -1749,14 +1752,16 @@ static int ata_do_reset(struct ata_port *ap, ata_reset_fn_t reset,
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* is complete and convert all ATA_DEV_UNKNOWN to
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* ATA_DEV_NONE.
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*/
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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if (classes[i] != ATA_DEV_UNKNOWN)
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ata_link_for_each_dev(dev, &ap->link)
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if (classes[dev->devno] != ATA_DEV_UNKNOWN)
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break;
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if (i < ATA_MAX_DEVICES)
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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if (classes[i] == ATA_DEV_UNKNOWN)
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classes[i] = ATA_DEV_NONE;
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if (dev) {
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ata_link_for_each_dev(dev, &ap->link) {
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if (classes[dev->devno] == ATA_DEV_UNKNOWN)
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classes[dev->devno] = ATA_DEV_NONE;
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}
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}
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return 0;
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}
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@ -1781,10 +1786,11 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
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unsigned int *classes = ehc->classes;
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int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
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int try = 0;
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struct ata_device *dev;
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unsigned long deadline;
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unsigned int action;
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ata_reset_fn_t reset;
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int i, rc;
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int rc;
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/* about to reset */
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ata_eh_about_to_do(ap, NULL, ehc->i.action & ATA_EH_RESET_MASK);
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@ -1808,8 +1814,8 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
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"port disabled. ignoring.\n");
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ehc->i.action &= ~ATA_EH_RESET_MASK;
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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classes[i] = ATA_DEV_NONE;
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ata_link_for_each_dev(dev, &ap->link)
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classes[dev->devno] = ATA_DEV_NONE;
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rc = 0;
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} else
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@ -1826,8 +1832,8 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
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reset = softreset;
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else {
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/* prereset told us not to reset, bang classes and return */
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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classes[i] = ATA_DEV_NONE;
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ata_link_for_each_dev(dev, &ap->link)
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classes[dev->devno] = ATA_DEV_NONE;
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rc = 0;
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goto out;
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}
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@ -1908,8 +1914,8 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
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/* After the reset, the device state is PIO 0 and the
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* controller state is undefined. Record the mode.
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*/
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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ap->link.device[i].pio_mode = XFER_PIO_0;
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ata_link_for_each_dev(dev, &ap->link)
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dev->pio_mode = XFER_PIO_0;
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/* record current link speed */
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if (sata_scr_read(ap, SCR_STATUS, &sstatus) == 0)
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@ -1935,7 +1941,7 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
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struct ata_device *dev;
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unsigned int new_mask = 0;
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unsigned long flags;
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int i, rc = 0;
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int rc = 0;
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DPRINTK("ENTER\n");
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@ -1943,11 +1949,9 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
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* be done backwards such that PDIAG- is released by the slave
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* device before the master device is identified.
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*/
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for (i = ATA_MAX_DEVICES - 1; i >= 0; i--) {
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unsigned int action, readid_flags = 0;
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dev = &ap->link.device[i];
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action = ata_eh_dev_action(dev);
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ata_link_for_each_dev_reverse(dev, &ap->link) {
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unsigned int action = ata_eh_dev_action(dev);
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unsigned int readid_flags = 0;
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if (ehc->i.flags & ATA_EHI_DID_RESET)
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readid_flags |= ATA_READID_POSTRESET;
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@ -1981,7 +1985,7 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
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dev->id);
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switch (rc) {
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case 0:
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new_mask |= 1 << i;
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new_mask |= 1 << dev->devno;
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break;
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case -ENOENT:
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/* IDENTIFY was issued to non-existent
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@ -2005,10 +2009,8 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
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/* Configure new devices forward such that user doesn't see
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* device detection messages backwards.
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*/
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
dev = &ap->link.device[i];
|
||||
|
||||
if (!(new_mask & (1 << i)))
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (!(new_mask & (1 << dev->devno)))
|
||||
continue;
|
||||
|
||||
ehc->i.flags |= ATA_EHI_PRINTINFO;
|
||||
@ -2035,20 +2037,22 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
|
||||
|
||||
static int ata_port_nr_enabled(struct ata_port *ap)
|
||||
{
|
||||
int i, cnt = 0;
|
||||
struct ata_device *dev;
|
||||
int cnt = 0;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++)
|
||||
if (ata_dev_enabled(&ap->link.device[i]))
|
||||
ata_link_for_each_dev(dev, &ap->link)
|
||||
if (ata_dev_enabled(dev))
|
||||
cnt++;
|
||||
return cnt;
|
||||
}
|
||||
|
||||
static int ata_port_nr_vacant(struct ata_port *ap)
|
||||
{
|
||||
int i, cnt = 0;
|
||||
struct ata_device *dev;
|
||||
int cnt = 0;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++)
|
||||
if (ap->link.device[i].class == ATA_DEV_UNKNOWN)
|
||||
ata_link_for_each_dev(dev, &ap->link)
|
||||
if (dev->class == ATA_DEV_UNKNOWN)
|
||||
cnt++;
|
||||
return cnt;
|
||||
}
|
||||
@ -2056,7 +2060,7 @@ static int ata_port_nr_vacant(struct ata_port *ap)
|
||||
static int ata_eh_skip_recovery(struct ata_port *ap)
|
||||
{
|
||||
struct ata_eh_context *ehc = &ap->link.eh_context;
|
||||
int i;
|
||||
struct ata_device *dev;
|
||||
|
||||
/* thaw frozen port, resume link and recover failed devices */
|
||||
if ((ap->pflags & ATA_PFLAG_FROZEN) ||
|
||||
@ -2064,9 +2068,7 @@ static int ata_eh_skip_recovery(struct ata_port *ap)
|
||||
return 0;
|
||||
|
||||
/* skip if class codes for all vacant slots are ATA_DEV_NONE */
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (dev->class == ATA_DEV_UNKNOWN &&
|
||||
ehc->classes[dev->devno] != ATA_DEV_NONE)
|
||||
return 0;
|
||||
@ -2153,19 +2155,18 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
|
||||
{
|
||||
struct ata_eh_context *ehc = &ap->link.eh_context;
|
||||
struct ata_device *dev;
|
||||
int i, rc;
|
||||
int rc;
|
||||
|
||||
DPRINTK("ENTER\n");
|
||||
|
||||
/* prep for recovery */
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
dev = &ap->link.device[i];
|
||||
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
|
||||
|
||||
/* collect port action mask recorded in dev actions */
|
||||
ehc->i.action |= ehc->i.dev_action[i] & ~ATA_EH_PERDEV_MASK;
|
||||
ehc->i.dev_action[i] &= ATA_EH_PERDEV_MASK;
|
||||
ehc->i.action |=
|
||||
ehc->i.dev_action[dev->devno] & ~ATA_EH_PERDEV_MASK;
|
||||
ehc->i.dev_action[dev->devno] &= ATA_EH_PERDEV_MASK;
|
||||
|
||||
/* process hotplug request */
|
||||
if (dev->flags & ATA_DFLAG_DETACH)
|
||||
@ -2192,8 +2193,8 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
|
||||
if (ata_eh_skip_recovery(ap))
|
||||
ehc->i.action = 0;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++)
|
||||
ehc->classes[i] = ATA_DEV_UNKNOWN;
|
||||
ata_link_for_each_dev(dev, &ap->link)
|
||||
ehc->classes[dev->devno] = ATA_DEV_UNKNOWN;
|
||||
|
||||
/* reset */
|
||||
if (ehc->i.action & ATA_EH_RESET_MASK) {
|
||||
@ -2241,8 +2242,8 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
|
||||
|
||||
out:
|
||||
if (rc) {
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++)
|
||||
ata_dev_disable(&ap->link.device[i]);
|
||||
ata_link_for_each_dev(dev, &ap->link);
|
||||
ata_dev_disable(dev);
|
||||
}
|
||||
|
||||
DPRINTK("EXIT, rc=%d\n", rc);
|
||||
|
||||
@ -2425,7 +2425,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
|
||||
|
||||
static struct ata_device * ata_find_dev(struct ata_port *ap, int id)
|
||||
{
|
||||
if (likely(id < ATA_MAX_DEVICES))
|
||||
if (likely(id < ata_link_max_devices(&ap->link)))
|
||||
return &ap->link.device[id];
|
||||
return NULL;
|
||||
}
|
||||
@ -2952,21 +2952,18 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
|
||||
int tries = 5;
|
||||
struct ata_device *last_failed_dev = NULL;
|
||||
struct ata_device *dev;
|
||||
unsigned int i;
|
||||
|
||||
if (ap->flags & ATA_FLAG_DISABLED)
|
||||
return;
|
||||
|
||||
repeat:
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
struct scsi_device *sdev;
|
||||
|
||||
dev = &ap->link.device[i];
|
||||
|
||||
if (!ata_dev_enabled(dev) || dev->sdev)
|
||||
continue;
|
||||
|
||||
sdev = __scsi_add_device(ap->scsi_host, 0, i, 0, NULL);
|
||||
sdev = __scsi_add_device(ap->scsi_host, 0, dev->devno, 0, NULL);
|
||||
if (!IS_ERR(sdev)) {
|
||||
dev->sdev = sdev;
|
||||
scsi_device_put(sdev);
|
||||
@ -2977,12 +2974,11 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
|
||||
* failure occurred, scan would have failed silently. Check
|
||||
* whether all devices are attached.
|
||||
*/
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (ata_dev_enabled(dev) && !dev->sdev)
|
||||
break;
|
||||
}
|
||||
if (i == ATA_MAX_DEVICES)
|
||||
if (!dev)
|
||||
return;
|
||||
|
||||
/* we're missing some SCSI devices */
|
||||
@ -3112,7 +3108,7 @@ void ata_scsi_hotplug(struct work_struct *work)
|
||||
{
|
||||
struct ata_port *ap =
|
||||
container_of(work, struct ata_port, hotplug_task.work);
|
||||
int i;
|
||||
struct ata_device *dev;
|
||||
|
||||
if (ap->pflags & ATA_PFLAG_UNLOADING) {
|
||||
DPRINTK("ENTER/EXIT - unloading\n");
|
||||
@ -3122,8 +3118,7 @@ void ata_scsi_hotplug(struct work_struct *work)
|
||||
DPRINTK("ENTER\n");
|
||||
|
||||
/* unplug detached devices */
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
unsigned long flags;
|
||||
|
||||
if (!(dev->flags & ATA_DFLAG_DETACHED))
|
||||
@ -3176,7 +3171,7 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
|
||||
spin_lock_irqsave(ap->lock, flags);
|
||||
|
||||
if (id == SCAN_WILD_CARD) {
|
||||
ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
|
||||
ehi->probe_mask |= (1 << ata_link_max_devices(&ap->link)) - 1;
|
||||
ehi->action |= ATA_EH_SOFTRESET;
|
||||
} else {
|
||||
struct ata_device *dev = ata_find_dev(ap, id);
|
||||
@ -3215,13 +3210,12 @@ void ata_scsi_dev_rescan(struct work_struct *work)
|
||||
{
|
||||
struct ata_port *ap =
|
||||
container_of(work, struct ata_port, scsi_rescan_task);
|
||||
struct ata_device *dev;
|
||||
unsigned long flags;
|
||||
unsigned int i;
|
||||
|
||||
spin_lock_irqsave(ap->lock, flags);
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
struct scsi_device *sdev = dev->sdev;
|
||||
|
||||
if (!ata_dev_enabled(dev) || !sdev)
|
||||
|
||||
@ -461,10 +461,9 @@ static unsigned int it821x_passthru_qc_issue_prot(struct ata_queued_cmd *qc)
|
||||
|
||||
static int it821x_smart_set_mode(struct ata_port *ap, struct ata_device **unused)
|
||||
{
|
||||
int i;
|
||||
struct ata_device *dev;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (ata_dev_enabled(dev)) {
|
||||
/* We don't really care */
|
||||
dev->pio_mode = XFER_PIO_0;
|
||||
|
||||
@ -28,10 +28,9 @@
|
||||
|
||||
static int ixp4xx_set_mode(struct ata_port *ap, struct ata_device **error)
|
||||
{
|
||||
int i;
|
||||
struct ata_device *dev;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (ata_dev_enabled(dev)) {
|
||||
ata_dev_printk(dev, KERN_INFO, "configured for PIO0\n");
|
||||
dev->pio_mode = XFER_PIO_0;
|
||||
|
||||
@ -109,10 +109,9 @@ static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */
|
||||
|
||||
static int legacy_set_mode(struct ata_port *ap, struct ata_device **unused)
|
||||
{
|
||||
int i;
|
||||
struct ata_device *dev;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (ata_dev_enabled(dev)) {
|
||||
ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
|
||||
dev->pio_mode = XFER_PIO_0;
|
||||
|
||||
@ -479,15 +479,14 @@ static void pdc2027x_set_dmamode(struct ata_port *ap, struct ata_device *adev)
|
||||
*/
|
||||
static int pdc2027x_set_mode(struct ata_port *ap, struct ata_device **r_failed)
|
||||
{
|
||||
int i;
|
||||
struct ata_device *dev;
|
||||
int rc;
|
||||
|
||||
i = ata_do_set_mode(ap, r_failed);
|
||||
if (i < 0)
|
||||
return i;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
rc = ata_do_set_mode(ap, r_failed);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (ata_dev_enabled(dev)) {
|
||||
|
||||
pdc2027x_set_piomode(ap, dev);
|
||||
|
||||
@ -32,11 +32,9 @@ static int pio_mask = 1;
|
||||
*/
|
||||
static int pata_platform_set_mode(struct ata_port *ap, struct ata_device **unused)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
struct ata_device *dev;
|
||||
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (ata_dev_enabled(dev)) {
|
||||
/* We don't really care */
|
||||
dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
|
||||
|
||||
@ -36,10 +36,9 @@
|
||||
|
||||
static int rz1000_set_mode(struct ata_port *ap, struct ata_device **unused)
|
||||
{
|
||||
int i;
|
||||
struct ata_device *dev;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
struct ata_device *dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (ata_dev_enabled(dev)) {
|
||||
/* We don't really care */
|
||||
dev->pio_mode = XFER_PIO_0;
|
||||
|
||||
@ -303,22 +303,20 @@ static int sil_set_mode (struct ata_port *ap, struct ata_device **r_failed)
|
||||
struct ata_device *dev;
|
||||
void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR];
|
||||
void __iomem *addr = mmio_base + sil_port[ap->port_no].xfer_mode;
|
||||
u32 tmp, dev_mode[2];
|
||||
unsigned int i;
|
||||
u32 tmp, dev_mode[2] = { };
|
||||
int rc;
|
||||
|
||||
rc = ata_do_set_mode(ap, r_failed);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
for (i = 0; i < 2; i++) {
|
||||
dev = &ap->link.device[i];
|
||||
ata_link_for_each_dev(dev, &ap->link) {
|
||||
if (!ata_dev_enabled(dev))
|
||||
dev_mode[i] = 0; /* PIO0/1/2 */
|
||||
dev_mode[dev->devno] = 0; /* PIO0/1/2 */
|
||||
else if (dev->flags & ATA_DFLAG_PIO)
|
||||
dev_mode[i] = 1; /* PIO3/4 */
|
||||
dev_mode[dev->devno] = 1; /* PIO3/4 */
|
||||
else
|
||||
dev_mode[i] = 3; /* UDMA */
|
||||
dev_mode[dev->devno] = 3; /* UDMA */
|
||||
/* value 2 indicates MDMA */
|
||||
}
|
||||
|
||||
|
||||
@ -1030,15 +1030,26 @@ static inline unsigned int ata_dev_absent(const struct ata_device *dev)
|
||||
}
|
||||
|
||||
/*
|
||||
* port helpers
|
||||
* link helpers
|
||||
*/
|
||||
static inline int ata_port_max_devices(const struct ata_port *ap)
|
||||
static inline int ata_link_max_devices(const struct ata_link *link)
|
||||
{
|
||||
if (ap->flags & ATA_FLAG_SLAVE_POSS)
|
||||
if (link->ap->flags & ATA_FLAG_SLAVE_POSS)
|
||||
return 2;
|
||||
return 1;
|
||||
}
|
||||
|
||||
#define ata_port_for_each_link(lk, ap) \
|
||||
for ((lk) = &(ap)->link; (lk); (lk) = NULL)
|
||||
|
||||
#define ata_link_for_each_dev(dev, link) \
|
||||
for ((dev) = (link)->device; \
|
||||
(dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \
|
||||
(dev)++)
|
||||
|
||||
#define ata_link_for_each_dev_reverse(dev, link) \
|
||||
for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
|
||||
(dev) >= (link)->device || ((dev) = NULL); (dev)--)
|
||||
|
||||
static inline u8 ata_chk_status(struct ata_port *ap)
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user